Rock4 SE nodered gpio, Pi keyboard node

Does anyone know how to use the Pi keyboard node (Raspberry Pi gpio nodes) on this platform (Rock4 SE)?

I am using the official radxa Debian image with LXDE. Node-red is installed and all the nodes used in the application are working correctly.

The issue now is how to use the gpio nodes (used in RPi platform) in this platform. I already installed the RPi.GPIO python library but I am missing the gpiomem file (gpio map) in this installation.
Any help or pointers would be strongly appreciated

kind regards
Jose Zapico